Abrick is released with no initial speed from the roof of a building and strikes the ground in 1.80 s , encountering no appreciable air drag. how tall, in meters, is the building?

Kinematics is used in this problem. The mass does not matter here because the question is mass independent. vi = 0 vf = x d = ? d = vi + 1/2 a t^2 d = 0 + 1/2 (9.8) (1.8)^2 d = 15.9 m (counting sig figs)

Charles darwin marked the difference among countless finches on the galápagos islands.i hope i !

If there was no gravity then their would be no downword force on the football to have it return the the grownd, and if there was no friction (mainly air friction) then there would be no opposing force the stop the ball from moving through the air allowing the ball to travle ∞.